Belimo ARB24-3-S Motor Actuator

The Belimo ARB24-3-S is a high-torque, non-spring return rotary actuator designed for precise control of ball valves in HVAC systems. Delivering 180 in-lb of torque, this 24V valve actuator provides reliable on/off or floating point control for both 24VAC and 24VDC applications. The rugged construction and brushless DC motor technology ensure a long service life without the upkeep required by traditional brushed motors. This model includes an integrated SPDT auxiliary switch, allowing for easy end-stop signaling or interlocking with auxiliary equipment. Designed for field installation onto Belimo B2 and B3 series valves, the ARB24-3-S offers a Manual Override button for manual positioning during commissioning or power loss. With its IP54 rated housing and multi-function capabilities, this industrial HVAC actuator is a standard choice for contractors looking for high-performance HVAC dampening and valve control solutions in demanding commercial environments.

• 180 in-lb Torque Output: Provides ample power for high-pressure drop applications and large diameter ball valves.
• Integrated Auxiliary Switch: One SPDT switch included for verifying valve position or sequencing additional HVAC components.
• Flexible Control Signal: Compatible with both 3-point floating and on/off control protocols for HVAC automation.
• NEMA 2 (IP54) Protection: Built to withstand common mechanical room conditions, ensuring consistent performance.
• Brushless DC Motor: Digitally controlled for constant torque and overload protection across the entire stroke.

How do you wire the Belimo ARB24-3-S for floating control?
This actuator uses a three-wire configuration where the common wire is connected to terminal 1, and the control signals are applied to terminals 2 and 3 to drive the actuator clockwise or counter-clockwise.

Can this actuator be used on third-party valves?
The ARB24-3-S is specifically engineered for use with the Belimo B2/B3 series ball valves using the standard linkage. Always verify the shaft diameter and torque requirements if attempting an actuator replacement for non-standard assemblies.

What is the purpose of the built-in auxiliary switch?
The SPDT switch is adjustable and is typically used to signal a controller or start a pump when the actuator reaches a specific position, improving system logic and HVAC energy efficiency.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.